2022 rust minor improvements

2022/rust/src/solutions/day02.rs

@@ -95,7 +95,7 @@ impl MatchResult {
 }
 
 
-fn solve1(data: &Vec<(char, char)>) -> i32 {
+fn solve1(data: &[(char, char)]) -> i32 {
     data.iter()
         .fold(0, |acc, (other, my)| {
             let my = Shape::from(my);
@@ -104,7 +104,7 @@ fn solve1(data: &Vec<(char, char)>) -> i32 {
         })
 }
 
-fn solve2(data: &Vec<(char, char)>) -> i32 {
+fn solve2(data: &[(char, char)]) -> i32 {
     data.iter()
         .fold(0, |acc, (other, result)| {
             let result = MatchResult::from(result);

2022/rust/src/solutions/day04.rs

@@ -12,7 +12,7 @@ pub fn run() -> () {
 }
 
 
-fn solve1(data: &Vec<((i32, i32), (i32, i32))>) -> usize {
+fn solve1(data: &[((i32, i32), (i32, i32))]) -> usize {
     data.iter()
         .filter(|((s1, e1), (s2, e2))|
             s1 <= s2 && e2 <= e1 || s2 <= s1 && e1 <= e2
@@ -20,7 +20,7 @@ fn solve1(data: &Vec<((i32, i32), (i32, i32))>) -> usize {
         .count()
 }
 
-fn solve2(data: &Vec<((i32, i32), (i32, i32))>) -> usize {
+fn solve2(data: &[((i32, i32), (i32, i32))]) -> usize {
     data.iter()
         .filter(|((s1, e1), (s2, e2))|
             s1 <= e2 && s2 <= e1

2022/rust/src/solutions/day06.rs

@@ -11,15 +11,15 @@ pub fn run() -> () {
 }
 
 
-fn solve1(data: &Vec<char>) -> usize {
-    marker_for(&data, 4)
+fn solve1(data: &[char]) -> usize {
+    marker_for(data, 4)
 }
 
-fn solve2(data: &Vec<char>) -> usize {
-    marker_for(&data, 14)
+fn solve2(data: &[char]) -> usize {
+    marker_for(data, 14)
 }
 
-fn marker_for(data: &Vec<char>, window_len: usize) -> usize {
+fn marker_for(data: &[char], window_len: usize) -> usize {
     data.windows(window_len)
         .enumerate()
         .filter_map(|(idx, window)| window.iter()
@@ -34,10 +34,7 @@ fn marker_for(data: &Vec<char>, window_len: usize) -> usize {
 fn parse_data(data: Vec<String>) -> Vec<char> {
     data.into_iter()
         .next()
-        .map(|char| char
-            .chars()
-            .collect()
-        )
+        .map(|char| char.chars().collect())
         .unwrap()
 }